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About Us

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Be energy wise!




NRGwise is the commercial brand of BYK Services LLC

BYK Services LLC is the offspring of three energy professionals with 25+ years of combined experience in the field of energy efficiency and renewable energy. In 2011, Benoit Delaveau met Kate Latham and Yvelle Green. Together they decided to bring BYK Services to life, inventing the concept of on-site energy coaching.


The energy and water efficiency coaching approach

Kate Latham and Benoit Delaveau are both professors teaching energy / water conservation in various North California universities. Certified energy auditors, both understand the value of education when it comes to our energy choices. NRGwise audits are unique in delivering step-by-step conservation plan. From a small beach house to a military base, we’ve done it all!


NRGwise in numbers

- created in 4/2012
- main office in San Francisco, CA
- covers the entire PG&E service area
- 500+ home energy audits experience
- 600+ hours of pro. training at PG&E 
- 2 squad vehicles
- EPA Energy Star Top 5 products partner
- Residential and commercial buildings
- certified Built it Green Green Point rater
- certified BEAP by ASHRAE
- certified city of San Francisco energy and water inspection (RECO)